Sonnax 77998-03SK Replacement Accumulator Seal Kit

The Sonnax 77998-03SK is a replacement seal kit designed to refresh the sealing capabilities of Sonnax pinless accumulator kit 77998-03K. This service kit contains five complete sets of high-quality seals for automatic transmission accumulator pistons in GM 200-4R, 700R4, 4L60, 4L60E, 4L65E, and 4L70E transmissions.

Kit Contents:

• Five (5) Viton D-rings for superior heat and fluid resistance
• Five (5) PTFE seals for low-friction, long-lasting performance

Key Features:

• Designed specifically for Sonnax pinless accumulator pistons
• Each accumulator requires one D-ring and one seal
• Premium Viton material resists degradation from transmission fluid and heat
• PTFE seals provide excellent sealing characteristics with minimal friction
• Restores proper accumulator function to improve shift quality

This replacement seal kit is ideal for transmission rebuilders and technicians maintaining vehicles equipped with GM 4L60-series and 700R4/200-4R transmissions. Regular seal replacement helps prevent fluid loss, maintains proper accumulator pressure, and ensures consistent shift quality.